One of the sellers also have this photo:
http://cgi.ebay.de/Orig-Foto-2-Motor...1%7C240%3A1318
It is one of the few operational Yak-2s photographed in an awkward position. It differs from the Yak-4 in having the oil coolers still at the chin of the nacelles.
According to "Barbarossa Victims" by T.J. Kopanski; In June 1941 only 12 served in the Western Special Military District and about 80 in the Kiew Special Military District.
Goran